Plan a flight · Sun 4:30 pm PDT (23:30 UTC)

Palm Springs International to Boeing Fld/King County International PSP → BFI

863 nautical miles (993 statute miles) north on a straight line, true course 344°, about 331° magnetic at the departure end (variation 13E). At 120 knots that is 6 h 54 min at the quickest height in today's winds (39,000 ft, a 5-knot tailwind), arriving about 11:24 pm PDT (06:24 UTC), after sunset at the destination. Right now PSP is VFR, wind from the north-northwest (330°) at 12 knots, gusting to 17; BFI is VFR, wind variable at 4 knots. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools. Airlines fly this pair: 2 flights in the DOT's last twelve reported months, the route's page.

The route the straight line, the warnings crossed, restrictions, pilot reports and the airports along the way · click a mark for its words

Green, blue, red and purple airport dots are the flying conditions reported there now (VFR, marginal VFR, IFR, low IFR); grey means no report. Red areas are SIGMETs, orange areas AIRMETs, hatched red areas temporary flight restrictions. Map tiles: OpenFreeMap, data © OpenStreetMap contributors.

Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of

AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the first 139 nm of the route.
AIRMET SIERRA 6E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 20 nm of the route.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 30 to 40 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 60 to 109 nm out.
AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the route from 149 to 298 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 625 to 675 nm out.
AIRMET ZULU 2C: moderate icing up to 14,000 ft. Over the route from 645 to 714 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 25,000 ft to 39,000 ft. Over the last 0 nm of the route.

A SIGMET warns of weather hazardous to all aircraft; an AIRMET of weather that matters to small aircraft and to flying without instruments. "From 60 to 180 nm out" is measured along the route from PSP.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

B737 at 14,000 ft, 39 nm west, 2:54 pm PDT (21:54 UTC): moderate turbulence. 50 nm along the route, 39 nm west of the line.
as filed, and in English
```
ONT UA /OV 20N ONT/TM 2154/FL140/TP B737/TB MOD
```
Report
a routine report filed through ONT
Where
20N ont
Time
21:54 UTC
Height
at 14,000 ft
Aircraft
B737
Turbulence
moderate
B738 descending, 39 nm west, 2:37 pm PDT (21:37 UTC): moderate chop turbulence. 50 nm along the route, 39 nm west of the line.
as filed, and in English
```
ONT UA /OV ONT358021/TM 2137/FLDURD/TP B738/TB MODERATE CHOP STARTING AT 130
```
Report
a routine report filed through ONT
Where
21 nm north (358°) of ONT
Time
21:37 UTC
Height
during the descent
Aircraft
B738
Turbulence
moderate chop starting at at 13,000 ft
CL30 at 24,000 ft, 19 nm east, 2:00 pm PDT (21:00 UTC): moderate clear-air turbulence from 19,000 ft to 24,000 ft, light rime icing, -3 °C, remarks: during the climb zlawc. 60 nm along the route, 19 nm east of the line.
as filed, and in English
```
DAG UA /OV HEC/TM 2100/FL240/TP CL30/TA M03/TB MOD CAT OCNL 190-240/IC LGT RIME/RM DURC ZLAWC AWC-WEB
```
Report
a routine report filed through DAG
Where
over HEC
Time
21:00 UTC
Height
at 24,000 ft
Aircraft
CL30
Temperature
−3 °C
Turbulence
moderate clear-air turbulence occasional from 19,000 ft to 24,000 ft
Icing
light rime
Remarks
during the climb zlawc
E75L at 18,000 ft, 32 nm west, 4:24 pm PDT (23:24 UTC): moderate turbulence from 18,000 ft to 22,000 ft, remarks: mountain wave a 10-knot loss of airspeed entered by zoa fdcs. 238 nm along the route, 32 nm west of the line.
as filed, and in English
```
LOL UA /OV BIH300011/TM 2324/FL 180/TP E75L/TB MOD 180-220/RM MTN WAVE /-10 ENTERED BY ZOA FDCS AWC-WEB
```
Report
a routine report filed through LOL
Where
11 nm northwest (300°) of BIH
Time
23:24 UTC
Height
at 18,000 ft
Aircraft
E75L
Turbulence
moderate from 18,000 ft to 22,000 ft
Remarks
mountain wave a 10-knot loss of airspeed entered by zoa fdcs
E75L at 10,000 ft, 37 nm west, 3:04 pm PDT (22:04 UTC): moderate rime icing, -9 °C, remarks: from 10,000 ft to 7,500 ft during the descent. 774 nm along the route, 37 nm west of the line.
as filed, and in English
```
PDX UA /OV PDX360025/TM 2204/FL100/TP E75L/TA M9/IC MOD RIME /RM 100-075 DURD
```
Report
a routine report filed through PDX
Where
25 nm north (360°) of PDX
Time
22:04 UTC
Height
at 10,000 ft
Aircraft
E75L
Temperature
−9 °C
Icing
moderate rime
Remarks
from 10,000 ft to 7,500 ft during the descent
B739 at 33,000 ft, 44 nm west, 4:02 pm PDT (23:02 UTC): remarks: mountain wave 10 knots zlawc. 60 nm along the route, 44 nm west of the line.
as filed, and in English
```
DRA UA /OV VCV242015/TM 2302/FL330/TP B739/RM MTN WAVE /- 10 KT /ZLAWC AWC-WEB
```
Report
a routine report filed through DRA
Where
15 nm southwest (242°) of VCV
Time
23:02 UTC
Height
at 33,000 ft
Aircraft
B739
Remarks
mountain wave 10 knots zlawc
A21N at 29,500 ft, 25 nm east, 3:50 pm PDT (22:50 UTC): remarks: mountain wave 10-15 kts/zlawc. 69 nm along the route, 25 nm east of the line.
as filed, and in English
```
DAG UA /OV DAG045010/TM 2250/FL295/TP A21N/RM MTN WAVE /- 10-15 KTS/ZLAWC AWC-WEB
```
Report
a routine report filed through DAG
Where
10 nm northeast (045°) of DAG
Time
22:50 UTC
Height
at 29,500 ft
Aircraft
A21N
Remarks
mountain wave 10-15 kts/zlawc
B38M at 36,000 ft, 39 nm west, 2:43 pm PDT (21:43 UTC): clear from 36,000 ft to 60,000 ft, -40 °C, wind 205° at 55 knots, remarks: produced by skypath. 79 nm along the route, 39 nm west of the line.
as filed, and in English
```
EDW UA /OV EDW154007 /TM 2143 /FL360 /TP B38M /SK SKC /WX FV99SM /TA M40 /WV 20555KT /RM PRODUCED BY SKYPATH
```
Report
a routine report filed through EDW
Where
7 nm southeast (154°) of EDW
Time
21:43 UTC
Height
at 36,000 ft
Aircraft
B38M
Sky
clear
Weather
flight visibility 99 miles
Temperature
−40 °C
Wind
from 205° at 55 knots
Remarks
produced by skypath
EPIC at 16,000 ft, 22 nm southwest, 1:48 pm PDT (20:48 UTC): light rime icing, -10 °C, remarks: zlawc. 99 nm along the route, 22 nm southwest of the line.
as filed, and in English
```
LAX UA /OV LAX016092/TM 2048/FL160/TP EPIC/TA M10/IC LGT RIME/RM ZLAWC AWC-WEB
```
Report
a routine report filed through LAX
Where
92 nm north (016°) of LAX
Time
20:48 UTC
Height
at 16,000 ft
Aircraft
EPIC
Temperature
−10 °C
Icing
light rime
Remarks
zlawc
B38M at 37,000 ft, 31 nm east, 3:25 pm PDT (22:25 UTC): -41 °C, wind 215° at 61 knots, remarks: produced by skypath. 198 nm along the route, 31 nm east of the line.
as filed, and in English
```
TPH UA /OV BTY308020 /TM 2225 /FL370 /TP B38M /TA M41 /WV 21561KT /RM PRODUCED BY SKYPATH
```
Report
a routine report filed through TPH
Where
20 nm northwest (308°) of BTY
Time
22:25 UTC
Height
at 37,000 ft
Aircraft
B38M
Temperature
−41 °C
Wind
from 215° at 61 knots
Remarks
produced by skypath
B737 at 27,000 ft, 43 nm west, 3:14 pm PDT (22:14 UTC): remarks: mountain wave a 10-knot loss of airspeed +/-300FT entered by zoa fdcs. 308 nm along the route, 43 nm west of the line.
as filed, and in English
```
RNO UA /OV 3830N11910W/TM 2214/FL270/TP B737/RM MTN WAVE +/-10KTS +/-300FT ENTERED BY ZOA FDCS
```
Report
a routine report filed through RNO
Where
3830N11910W
Time
22:14 UTC
Height
at 27,000 ft
Aircraft
B737
Remarks
mountain wave a 10-knot loss of airspeed +/-300FT entered by zoa fdcs
E75L at 29,000 ft, 20 nm east, 2:03 pm PDT (21:03 UTC): light to moderate chop turbulence. 397 nm along the route, 20 nm east of the line.
as filed, and in English
```
WMC UA /OV WMC200050/TM 2103/FL290/TP E75L/TB CONS LGT OCNL MOD CHOP /ZLC
```
Report
a routine report filed through WMC
Where
50 nm south (200°) of WMC
Time
21:03 UTC
Height
at 29,000 ft
Aircraft
E75L
Turbulence
continuous light occasional moderate chop zlc
PC24 at 40,000 ft, 46 nm east, 4:10 pm PDT (23:10 UTC): light to moderate turbulence. 476 nm along the route, 46 nm east of the line.
as filed, and in English
```
LOL UA /OV SDO291023/TM 2310/FL400/TP PC24/TB LGT OCNL MOD /ZLC
```
Report
a routine report filed through LOL
Where
23 nm west (291°) of SDO
Time
23:10 UTC
Height
at 40,000 ft
Aircraft
PC24
Turbulence
light occasional moderate zlc
E75L at 9,000 ft, 29 nm southwest, 4:05 pm PDT (23:05 UTC): light rime icing, -6 °C, remarks: zse. 655 nm along the route, 29 nm southwest of the line.
as filed, and in English
```
RDM UA /OV DSD155012/TM 2305/FL090/TP E75L/TA M06/IC LGT RIME/RM ZSE
```
Report
a routine report filed through RDM
Where
12 nm southeast (155°) of DSD
Time
23:05 UTC
Height
at 9,000 ft
Aircraft
E75L
Temperature
−6 °C
Icing
light rime
Remarks
zse

4 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 UTC · at 120 knots true airspeed

The westbound cruising heights for this course (VFR: even thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 8 forecast points nearest it (ONT, WJF, BIH, RNO, LKV, RDM, YKM, SEA). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
4,500 ft	300° at 4 kt	+3 kt	2 °C	117 kt	7 h 23 min	11:53 pm PDT (06:53 UTC)
6,500 ft	300° at 4 kt	+3 kt	1 °C	117 kt	7 h 23 min	11:53 pm PDT (06:53 UTC)
8,500 ft	310° at 5 kt	+4 kt	-3 °C	116 kt	7 h 26 min	11:56 pm PDT (06:56 UTC)
10,500 ft	280° at 6 kt	+2 kt	-4 °C	118 kt	7 h 19 min	11:49 pm PDT (06:49 UTC)
12,500 ft	260° at 7 kt	0	-8 °C	120 kt	7 h 12 min	11:42 pm PDT (06:42 UTC)
14,500 ft	260° at 7 kt	+1 kt	-12 °C	119 kt	7 h 15 min	11:45 pm PDT (06:45 UTC)
16,500 ft	270° at 7 kt	+2 kt	-15 °C	118 kt	7 h 19 min	11:49 pm PDT (06:49 UTC)
18,000 ft FL180	280° at 7 kt	+3 kt	-18 °C	117 kt	7 h 23 min	11:53 pm PDT (06:53 UTC)
24,000 ft FL240	300° at 14 kt	+10 kt	-25 °C	110 kt	7 h 51 min	12:21 am PDT (07:21 UTC)
30,000 ft FL300	270° at 22 kt	+5 kt	-31 °C	115 kt	7 h 30 min	12:00 am PDT (07:00 UTC)
34,000 ft FL340	250° at 24 kt	−3 kt	-35 °C	123 kt	7 h 01 min	11:31 pm PDT (06:31 UTC)
39,000 ft FL390	240° at 30 kt	−5 kt	-42 °C	125 kt	6 h 54 min	11:24 pm PDT (06:24 UTC)

Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; a height is left out when the forecast has no wind for it over most of the line (the ground is higher). Ground speed is the airspeed less the headwind; the time en route is for the straight line and ignores climb, descent and routing around weather.

The forecast points as issued

Point	From	3,000	6,000	9,000	12,000	18,000	24,000	30,000	34,000	39,000
ONT	used from 0 nm out; 49 nm from the line	230/11	200/17 6°	230/27 4°	230/32 -2°	210/39 -12°	220/51 -20°	220/48 -29°	210/51 -34°	210/52 -44°
WJF	used from 50 nm out; 66 nm from the line		220/30 8°	240/28 5°	230/34 -2°	220/34 -13°	220/48 -20°	220/47 -29°	210/48 -34°	220/52 -44°
BIH	used from 149 nm out; 62 nm from the line		L/V	210/14 6°	210/20 -2°	230/26 -14°	220/32 -24°	220/63 -27°	220/56 -35°	230/50 -44°
RNO	used from 298 nm out; 71 nm from the line		320/7	260/13 1°	230/21 -7°	210/38 -17°	220/43 -26°	230/54 -29°	230/59 -32°	230/54 -41°
LKV	used from 446 nm out; 67 nm from the line			010/18 -6°	280/7 -11°	290/9 -22°	280/13 -27°	290/20 -31°	260/19 -34°	260/27 -39°
RDM	used from 595 nm out; 46 nm from the line		010/15 -2°	030/21 -8°	020/26 -12°	020/46 -22°	010/72 -27°	360/47 -34°	340/31 -35°	320/20 -40°
YKM	used from 744 nm out; 52 nm from the line	030/16	020/18 0°	030/30 -8°	030/23 -13°	020/40 -23°	010/73 -29°	010/54 -36°	360/29 -37°	330/16 -40°
SEA	used from 794 nm out; 40 nm from the line	360/9	350/10 1°	010/10 -5°	030/20 -11°	020/60 -17°	010/86 -26°	360/90 -40°	010/68 -42°	360/31 -43°

The weather now: both ends and the airports along the way public airports with a weather report within 25 nm of the line, one for each stretch

Airport	Where	Conditions	Wind	Visibility	Ceiling	Elevation	Reported
PSP Palm Springs, CA	departure	VFR	from the north-northwest (330°) at 12 knots, gusting to 17	10+ mi	none	476 ft	3:53 pm PDT (22:53 UTC)
DAG Daggett, CA	60 nm out, 5 nm northeast of the line	VFR	from the southwest (220°) at 22 knots, gusting to 29	10+ mi	none	1,930 ft	22:50 UTC
HTH Hawthorne, NV	298 nm out, 18 nm west of the line	VFR	from the north-northwest (340°) at 18 knots	10+ mi	none	4,230 ft	23:15 UTC
FLX Fallon, NV	357 nm out, 6 nm west of the line	no report just now				3,966 ft
RDM Redmond, OR	665 nm out, 20 nm southwest of the line, tower	VFR Sky: a broken layer at 3,200 feet, a broken layer at 4,200 feet, overcast at 7,500 feet	from the north-northwest (340°) at 10 knots	10+ mi	3,200 ft	3,081 ft	22:56 UTC
DLS The Dalles, OR	744 nm out, 8 nm east of the line	VFR Sky: overcast at 9,500 feet	from the west-northwest (300°) at 3 knots	10+ mi	9,500 ft	246 ft	22:53 UTC
PLU Puyallup, WA	843 nm out, 9 nm southwest of the line	VFR Weather: light drizzle	from the north (010°) at 6 knots	10+ mi	none	537 ft	23:15 UTC
BFI Seattle, WA	destination	VFR Sky: a few clouds at 5,000 feet	variable at 4 knots	10+ mi	none	21 ft	3:53 pm PDT (22:53 UTC)

The highest airport on this list sits at 4,230 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At BFI when you get there the forecast at the estimated arrival, 11:24 pm PDT (06:24 UTC)

Wind light and variable, visibility more than 6 miles, clear skies VFR

The whole forecast for BFI

From Sun 11:00 am PDT (18:00 UTC): wind from the north at 5 knots, visibility more than 6 miles, a few clouds at 10,000 feet
From Sun 2:00 pm PDT (21:00 UTC): wind from the north-northwest at 9 knots, visibility more than 6 miles, scattered clouds at 20,000 feet
From Sun 7:00 pm PDT (02:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
From Mon 2:00 am PDT (09:00 UTC): wind from the southeast at 2 knots, visibility more than 6 miles, patches of fog, clear skies
From Mon 9:00 am PDT (16:00 UTC): wind from the south-southeast at 3 knots, visibility more than 6 miles, clear skies

The forecast for PSP, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the north-northwest at 11 knots, gusting to 18, visibility more than 6 miles, a few clouds at 5,000 feet, scattered clouds at 10,000 feet
From Sun 11:00 pm PDT (06:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 10,000 feet
From Mon 2:00 pm PDT (21:00 UTC): wind from the northwest at 11 knots, gusting to 18, visibility more than 6 miles, a few clouds at 10,000 feet

Temporary flight restrictions on the line or within 25 nm of it

6/8887 Indio, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 Local 15 nm from the route, at the departure end · security · until 12 October · ZLA

Daylight

Sunset at PSP 6:16 pm PDT (01:16 UTC), at BFI 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 UTC)). At 120 knots the arrival at BFI is before sunrise there (7:23 am PDT (14:23 UTC)).

Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (closed runways, lights out) are not shown: the FAA's notice search is not open to sites like this one at this time.

Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads

Radar now, the Pacific Southwest · loop National Weather Service

Radar now, the Pacific Northwest · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft, observations and terminal forecasts), the National Weather Service radar, the Weather Prediction Center's charts, the FAA's temporary flight restriction list and shapes, and the FAA's airport file for the positions, elevations and magnetic variation. Fetched when the page is viewed and kept a few minutes. Each leg is the straight line between its two airports; airways, terrain and airspace are not considered. The airports in detail: Palm Springs International, Boeing Fld/King County International.